Mac OSX Yosemite.
I will have to upgrade my OS for my work accounting software. I will not have the choice to stay with Yosemite. My Print Music was just for fun and the occasional short arrangement for a piano student or other such things- maybe 2 or 3 times a year. Never enough to make the investment or regular upkeep that would be Finale. I will have to look elsewhere. But I guess if Make Music wanted the amateur musician market they would keep a program in their stable that would work for us.